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Decisions on Tuberculous Car- i 
CASSEs Retained for Demonstration 
AT Meeting of Veterinary Inspec- 
tors OF THE Bureau of Animal In- 
dustry at Chicago, May, i909. 



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UNITED STATES DEPART5VJENT OF AGRICULTURE, 

BUREAU OF ANI3V;AL INDUSTRY, 

WASHINGTON, 0. O. 



June 28, 1909. 



DISPOSITION O'F TUBEECULOUS CARCASSES. 

During the reoent meeting in Chicago of the veterinary inspectors in charge 
of the various meat-inspection stations in the United States the following-men- 
tioned hog and cattle carcasses affected with tuberculosis were retained for 
the purpose of demonstrating the extent and character of the lesions which would 
permit of the disposition of these carcasses for food, lard, tallow, or offal, in 
accordance with the present rules and regulations governing meat inspection. In 
making these dispositions the chief intention was to give an appropriate inter- 
pretation of the present post-mortem regulations in order that greater uniform- 
ity would obtain in the various meat-inspection centers upon this most important 
disease of food-producing animals. 

Jor comparative purposes it was assumed that the live weight of each of 
the hogs in question was 250 po\md3. 

HOG NO. 27. 

Cervical glands Slight and calcified. 

Bronchial glands Do. 

Gastro-hepatio glands Well marked and calcified. 

Mesenteric glands Slight and calcified. 

Disposition: Food. 

Remarks: This carcass would still be passed for food in case liver foci 
(not exceeding 12 in number) were present, with either the anterior node of the 
sublumbar gland or the prescapular gland involved. 

HOG NO. 23. 

Cervical glands Enlarged and calcified. 

Bronchial glands Slightly enlarged and calcified. 

Portal glands Normal size; lesions slight and calcified. 

Mesenteric glands Slight and calcified* 

Disposition: rood. 



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Page S 

COW NO. 34» 

Bronchial glands Slight and oaseo-oalcareous. 

Mediastinal glands Do. 

Lungs Several small nodules, size of walnut, 

in each lung. 
Mesenteric glands Slight and caseous. 

Dispositionj Pood. 

HOG NO. 24. 

Cervical glands Somewhat enlarged; arbor vltes appearance. 

Bronchial glands Slightly enlarged and calcified. 

Portal glands Somewhat enlarged, with well-marked cal- 
cified lesions. 

Mesenteric gleuids Extensive, all calcified. 

Spleen Well marked, calcified. 

Disposition: Lard. 

Remarks: The spleen can not be considered as a seat of primary Infection, 
and therefore the carcass should not be passed for food. If instead similar 
lesions in the liver or other primary seat of infection were present, the carcass 
would be a food carcass. 

HOG NO. 22. 

Cervical glands Enlarged and caseo-calcareous. 

Bronchial glands Slight and calcified. 

Portal glands Enlarged, well marked and caseo-calcareous. 

Liver ...About 20 well-marked nodules. 

Mesenteric glands..... ...Slight and calcified. 

Disposition: Lard, 

Remarks: This carcass is on the border line between a food and lard carcass, 
with the number of liver nodules deciding its disposition for lard. If there 
were but several (not more than 12) liver foci present, the carcass could be 
passed for food in accordance with the regulations. 

HOG NO. 18. 

Cervical glands Well marked and caseo-calcareous. 

Bronchial glands Slight and calcified. 

Lungs Three or four shot-like nodules. 

Portal glands Pairly well marked and calcified. 

Liver Twelve foci. 

Mesenteric glands Slight and calcified. 

Intestines Mesenteric emphysema. 

Disposition: Lard. 

Remarks: Without the infection of the lungs this carcass could be passed 
for food. 

HOG NO. 17. 

Cervical glands Slight, calcified, and abscessed. 

Bronchial glands Slight and calcified. 

Lungs Twelve or more shot-like nodules. 

Portal glands Pairly well marked and calcified. 

Liver About 12 foci. 

Spleen One nodule. 

Disposition: Lard. 



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HOG NO. 15. 

Cervical glands Arbor vltse appearance. 

Bronchial glands Well marked and caseo-calcareous. 

Lungs A number of shot-like nodules, but not 

uniformly distributed throughout lungs, 

Portal glands Less than 12 foci. 

Spleen One nodule. 

Disposition: Lard. 

HOG NO. 7. 

Cervical glands Well marked and caseo-caloareous . 

Bronchial glands Do. 

Gastro-hepatio glands .... Do, 

Liver Fairly well distributed lesions. 

Spleen Two well-defined nodules , 

Disposition: Lard, 

Remarks: The two nodules in the spleen are sufficient to cause this carcass 
to be tanked for lard. 

HOG NO. 2. 

Cervical glands Calcified. 

Bronchial glands Do. 

Lungs Several shot-like nodules. 

Portal glands Calcified. 

Liver About 6 nodules. 

Spleen ffour small nodules. 

Mesenteric glands Two lesions, calcified. 

Disposition: Lard. 

HOG NO. 11. 

Cervical glands Arbor vitas appearance. 

Bronchial glands Pairly well marked. 

Lungs Eleven shot-like nodules in both lungs. 

Portal glands Pairly well marked and caseo-calcareous. 

Liver, A few foci. 

Mesenteric glands Slight. 

Presoapular glands Caseo-calcareous foci in left gland. 

Disposition! Lard. 

Remarks: The lesions of the lungs would naturally cause such a carcass to 
be tanked for lard. Without lung lesions it could be passed for food, as men- 
tioned in the remarks under Hog No. 27. 

HOG NO. 9. 

Cervical glands Caseo-caloareous (one gland only). 

Bronchial glands Well marked and caseo-calcareous. 

Lungs Three local areas in main lobe, 2 of which 

are well marked, a few scattered foci 
in periphery of ventral lobe. 

Mediastinal glands Slight and caseo-calcareous. 

Portal glands Extensive and caseo-caloareous. 

Liver More than 12 small nodules. 

Spleen One nodule. 

Mesenteric glands Slight and caseo-calcareous. 

Disposition: Lard. 



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HOG NO. 5. 

Cervical glands Calcified. 

Bronchial glands Do, 

Lungs Lo3alized in ventral lobes, slight in 

adjoining portion of main lobe. 

Diaphragmatic pleura Area corresponding to lung area. 

Portal glands Slight and calcified. 

Mesenteric glands Do. 

Disposition: Lard. 

HOG NO. 3. 

Cervical glands Slight. 

Bronchial glands Caseous, 

Lungs A few shot-like nodules on right venti»al 

lobe, also on periphery of main lobe. 

Liver Nodules, fairly well distributed. 

Gastro-hepatic glands Caseous. 

Spleen Several well defined nodules. 

Plurse Several small areas scattered over right side, 

Disposition: Lard. 

HOG NO, 21. 

Cervical glands Arbor vit© appearance. 

Bronchial glands A few foci. 

Lungs A few shot-like nodules. 

Liver Tairly well marked with pinhead foci. 

Portal glands Enlarged, caseo-f ibroid condition. 

Mesenteric glands Slight arbor vit^ formation. 

Disposition: Lard. 

HOG NO. 1. 

Cervical glands Slight and calcified. 

Bronchial glands Enlarged and caseo-calcareous. 

Lungs Few shot-like nodules in each main lobe, 

Gastro-hepatic glands Enlarged and caseo-calcareous. 

Liver Nodules fairly well distributed. 

Spleen Several nodules. 

Prescapular glands Slight and caseo-calcareous. 

Disposition: Lard. 

HOG NO, 12, 

Cervical glands Slight, calcified. 

Bronchial glands Well marked and caseous. 

Mediastinal glajids Caseous. 

Lungs A few scattered shot-like nodules. 

Pleura... ..Similar nodules on each side of pleura. 

Portal glands Enlarged and caseous. 

Liver .....Well marked with pinhead foci. 

Spleen Two small foci. 

Anterior sublumbar gland Caseous, 

Mesenteric glands Slight and caseous. 

Prescapular glands Slight, caseous; both glajids. 

Disposition: Lard, 



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Page 5 

HOG NO. 4. 

Cervical glands Caseo-oaloareous . 

Bronchial glands Do. 

Lungs A few shot-like nodules . 

Pleura Do , 

Inf. thoracic gland. Calcified. 

Portal glands Caseo-calcareous. 

Liver Fairly well marked with pinhead foci. 

Spleen Several nodules. 

Splenic gland ' Calcified. 

Ant. sulDlumbar gland Do. 

Mesenteric glands Many enlarged, caseo-calcareous. 

Sup. inguinal gland Slight and calcified. 

Disposition: Lard. 

COW HO. 33. 

Bronchial glands ....Slight, caseous. 

Mediastinal glands Do. 

Lungs Two nodules size of walnut in main lobe 

of right lung. 
Prescapular glands Enlarged, broken down and partially liquefied. 

Disposition: Tallow. 

Remarks: The character of the lesions and the large amount of tuberculous 
pus present prevent the passi/ig of this carcass for food. 

STIER m. 28. 

Bronchial glands A few caseous lesions. 

Ant. mediastinal glands ITormal Size, sma3-l caseous lesions. 

Lungs Hazelnut-sized nodule in main lobe of left 

lung. 

Portal glands Several small caseous lesions. 

Liver lour walnut -sized caseous nodules. 

Mesenteric glands Severa.l well marked and caseous lesions. 

Disposition: Tallow. 

Remarks: The caseous character of the lesions in this carcass causes it 
be used for tallow according to the regulations. 

COW NO. 29. 

Bronchial glands Slightly enlarged and caseous. 

Ant .and post .mediastinal glands Slightly enlarged and caseous. 

Lungs Hazelnut-sized nodule in main lobe of right 

lungj small nodule in main lobe of left 
lungj small nodule in cephalic lobe. 

Portal glands Much enlarged and caseous. 

Liver 25-30 scattered through substance of liver. 

Mesenteric glands Two caseous lesions. 

Disposition: Tallow. 

STEER NO. 30. 

Bronchial glands Slightly enlarged and caseous. 

Mediastinal glands Do. 

Lungs A nodule the size of a hen's egg in main 

lobe of left lung; in left cephalic 
lobe a nodule the size of a walnut. 

Portal glands ', Well marked and caseous. 

Liver Two extensive areas, caseous. 

Mesenteric glands Two glands show slight caseous lesions. 

Disposition: Tallow, 



Page 6 

HOG NO. 13. 

Cervical glands Extensive, caseous, and liquefying. 

Bronchial glands Slight and calcified. 

Mediastinal glands Do. 

Lungs Uniformly distributed shot-like nodules. 

Pleura Small nodules scattered over each side. 

Liver Miliary foci. 

Spleen Well marked nodules . 

Mesenteric glands Slight and caseo-caloareous . 

Super, inguinal glands Glands of both sides fairly wroll marked 

and oaseo-calcareous. 
Disposition: Offal, 

Remarks: Generalization of the disease is here evidenced by the uniformly 
distributed tubercles in both lungs. 

HOG NO. 20. 

Cervical glands Arbor vitse appearance. 

Bronchial glands Enlarged, hemorrhagic but no visible tuber- 
culous lesions. 

Lungs Pilled throughout with shot-like nodules. 

Liver Miliary, 

Pluera Well marked acute lesions. 

Portal glands Hemorrhagic but no visible lesions of tuber- 
cle bacilli. A few nodules on portion 
of serous membrane attached to liver. 
Disposition! Offal. 

HOG NO. 25. 

Cervical glands Extensive, caseous. 

Bronchial glands Enlarged and caseous. 

Lungs Well marked caseous lesions in both lungs. 

Portal glands Much enlarged and caseo-calcareous. 

Liver Miliary. 

Spleen Do. 

Mesenteric glands Slight but affects entire chain. 

Kidneys About a dozen miliary tubercles. 

Renal gland Much enlarged and caseous. 

Prapectoral glands Hemorrhagic and caseous. 

Prec rural glands Well marked and caseous. 

Disposition: Offal. 

HOG NO. 14. 

Cervical glands Slight and calcified. 

Bronchial glands Do. 

Mediastinal glands Do. 

Lungs A few scattered shot-like nodules surround- 
ed by hyperemio zones in both lungs. 

Pleura Well marked acute lesions on both sides, 

Prescapular glands Both slight and calcified. 

Liver Pairly well marked with miliary foci. 

Splenic gland Slight and calcified. 

Mesenteric glands Do. 

Iliac glands Do . 

Renal gland , Do . 

Sublumbar glands Do . 

Disposition: Offal. 

Remarks: The thora,cic lesions are actively progressive, as indicated by the 
presence of young tubercles and acute inflammatory zones surrounding them. 



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HOa NO. 8. 

Cervical glands Slight and caseous. 

Bronchial glands Extensive and caseo-calcareous. 

Lungs Do. 

Pleura General over pleura. 

Inf, thoracic glands Caseo-calcareous. 

Portal glands Do. 

Liver Pairly well distributed. 

Spleen Three well defined nodules . 

Mesenteric glands Slight and caseo-calcareous. 

Disposition: Offal. 

HOG NO. 26. 

Cervical glands Much enlarged and caseo-calcareous. 

Bronchial glands Do. 

Lungs ;,.. Ventral and cephalic lobes of each lung 

solidified; several well marked, acute 
lesions in main lobes } other lesions 
caseous and quite well distributed. 

Gastro-hepatio glands Very much enlarged and caseo-calcareous. 

Liver Numerous pinhead nodules. 

Mesenteric glands Slight and caseous. 

Disposition: Offal. 

HOG NO. 10. 

Cervical glands Extensive, broken down, one liquefying. 

Bronchial glands Extensive and calcareo-oaseous . 

Lungs Fairly v;8 11 distributed throughout lungs 

with numerous patches on surfaces 
which appear acute. 

Pleura Well marked lesions. 

Portal glands Extensive and calcareo-caseous. 

Liver Abotit a dozen foci. 

Spleen Six well defined nodules. 

Mesenteric glands One slight caseous lesion. 

Disposition: Offal. 

HOG NO. 16. 

Cervical glands ....:., ..Arbor vita appearance. 

Bronchial glands Do. 

Lungs Several pronounced acute lesions but not 

uniformly distributed. 

Inf .thoracic gland Caseous. 

Pluera A few slight areas on both sides. 

Renal gland Arbor vitffi appearance. 

Presoapular glands One affected, slight. 

Portal glands Arbor vitra appearance. 

Liver Well marked with miliary foci. 

Spleen Enlarged, with well marked nodules. 

Mesenteric glands Slight and caseous. 

Super, inguinal glands One gland, slight and caseous. 

Disposition: Offal. 



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Page 8 



HOG NO. 19. 



Cervioal glands ArlDor vitjg appearance. 

Bronchial glands Slight and caseous. 

liungs Numerous shot-like nodules, but not uni- 
formly distributed throughout both lungs, 

Pleura Stringy, tuberculous pleurisy. 

Portal glands Slight and caseous. 

Liver Well marked lesions. 

Spleen Do , 

Stomach Slight lesions on external surface. 

Left sup. inguinal glands Fibroid appearance. 

Disposition; Offal. 

HOQ NO. 6, 

Cervical glands Both greatly enlarged, one broken down 

and liquefying. 

Bronchial glands Calcified. 

Mediastinal glands Do. 

Lungs A few shot-like nodules in each lung. 

Diaphragmatic and costal pleura Slight lesions. 

Inf. thoracic gland Caseous. 

Prepectoral gland Hemorrhagic and contains a few acute foci. 

Liver Miliary foci. 

Portal glands Caseo-calcareous* 

spleen Several acute foci. 

Splenic gland Calcified. 

Mesenteric glands Extensive calcareo-caseous lesions in 

all these glands. 

Disposition: Offal. 

BULL NO. 31, 

Bronchial glands Numerous small hazelnut sized caseous lesions, 

Ant . and post .mediastinal glands Do . 

Lungs Uniformly distributed nodules in both lungs, 

Portal glands A few caseous lesions. 

Liver Well marked nodules throughout. 

Mesenteric glands Quite extenive, several glands caseo- 

calcareous lesions, 
Prescapular and iliac glands . .Hemorrhagic but show no visible foci. 

Disposition: Offal. 

BULL NO. 32. 

Bronchial, mediastinal, portal, 

and mesenteric glands ....Show small pea-sized nodules throughout 

the chain; caseated. 
Lungs Extensive in main lobe of right lung, 

several small nodules in left. 
Liver Extensive area near center with numerous 

small nodules throughout the other 

parts of the organ. 

Disposition: Offal. 



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Page 9 

GENERAL REMARKS. 

It will be otserved from the foregoing notes that there is a greater varia- 
tion of lesions between the two extremes representing lard and tallow carcasses 
than between the extremes in the food and offal classifications. In other words, 
in the execution of the present regulations it will be found that the broad range 
permitted in the lard ajid tallow classification allows a strong contrast betv/een 
the mildly infected carcasses on the one hand and those which are more markedly 
infected on the other extreme of this class of carcasses. The extremes in the 
food classification as well as those in the offal classification are not nearly 
80 pronounced. 

It is desired that inspectors in charge shall fully understand the funda- 
mental principles underlying the above disposition of carcasses; and in case 
there is a difference of opinion or lack of understanding of the basis upon which 
any of these dispositions are made, the inspectors are requested to correspond 
with this office on the points which are not clear. 



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Chief of Bureau. 



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